When you have sex with a fat bitch in a pool. As you further engage yourselves in the act, you "the male" position yourself behind the whale, and fuck her from behind. After a couple minutes you pick up her feet out of the water creating a "whale tail" shape. (try to lift up as much of her legs an ass out of the water as you can). when you feel that you cant go on any further from exhaustion, drop her ackles and listen for the "smack!!!" sound from her legs hiting the water thus making her whole body go under water, and watch as her head comes up to blow the water out of her mouth!!
That guy went whale railin'!!! haha, look at that beached whale spew the water out of her mouth!!!